In '53, Chevy went back to the series number on the side of the hood (just the number, no Chevrolet script). Same for '54.
For U.S. production, the 2-tons would be 6000 series, and 1500 would refer to the 150 series passenger cars (including sedan delivery).
For Canadian production, I think the 2-ton trucks were 1500 series. So this must be a Canadian truck.
I don't think any of these number emblems exist as repops for anything other than a 3100 series.